hi,
the delay in response is due to increase response time-continuous post on the topic increases the response time and move the topic from our pending list
now come to your issue
for woo-commerce checkout page
a. Go to WP Admin - Settings - Permalinks and re-save
b. Check WP Admin - WooCommerce - Settings - Checkout, make sure the above page is connected in settings.
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and for edit course yes i have tested the same on my local setup as well
and it's not showing in the course-status section and the edit course separately not working
for now you can do a thing that select the blank template and then manage the courses from there
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please let me know further